eth_call - Polygon

GET https://polygon-mainnet.unifra.io/v1/{your-api-key}

Polygon API -Executes a new message call immediately without creating a transaction on the block chain.

Parameters

• Object - The transaction call object
  • from: DATA, 20 Bytes - (optional) The address the transaction is sent from.
  • to: DATA, 20 Bytes - The address the transaction is directed to.
  • gas: QUANTITY - (optional) Integer of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions.

    NOTE: this parameter has a cap of 550 Million Gwei per request. Reach out to us at [email protected] if you want to increase this limit.

  • gasPrice: QUANTITY - (optional) Integer of the gasPrice used for each paid gas.

    Note: most of our users (95%+) never set the gasPrice on eth_call.

  • value: QUANTITY - (optional) Integer of the value sent with this transaction
  • data: DATA - (optional) Hash of the method signature and encoded parameters. For details see Ethereum Contract ABI
• QUANTITY|TAG - Integer block number, or the string "latest", "earliest" or "pending" (see the default block parameter), OR the blockHash (in accordance with EIP-1898)

Note: the parameter is an object instead of a string and should be specified as: {"blockHash": "0x"}. Learn more here.

Note: eth_call has a timeout restriction at the node level. Batching multiple eth_call together on-chain using pre-deployed smart contracts might result in unexpected timeouts that cause none of your calls to complete. Instead, consider serializing these calls, or using smaller batches if they fail with a node error code.

JSON

params: [
    {
        "from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
        "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
        "gas": "0x76c0",
        "gasPrice": "0x9184e72a000",
        "value": "0x9184e72a",
        "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
    },
    "latest"]
]

---

Returns

DATA - The return value of executed contract.

---

Example

Request

cURL

curl https://polygon-mainnet.unifra.io/v1/your-api-key \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_call","params":[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],"id":1}'

Postman

URL: https://polygon-mainnet.unifra.io/v1/your-api-key
RequestType: POST
Body:
{
    "jsonrpc":"2.0",
    "method":"eth_call",
    "params":[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],
    "id":1
}

Result

JSON

{
	"jsonrpc": "2.0",
	"id": 1,
	"result": "0x"
}

🚧

The below parameter inputs do not work, please reference the section above instead.